package com.example.demo;


import org.springframework.boot.SpringApplication;

import java.io.File;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Map;

public class Test {
    public static void main(String[] args) {

        long startTime = System.currentTimeMillis();



        long endTime = System.currentTimeMillis();
        long elapsedTime = endTime - startTime;
        System.out.println("代码执行时间：" + elapsedTime + "毫秒");


    }


}
